AirHint found the following cheapest return flights from Belfast (BHD) to Kaunas (KUN) in December 2025 (see full year).

Return flights

11 Dec - 13 Dec	easyJet
11 Dec - 14 Dec	easyJet
07 Dec - 11 Dec	easyJet
14 Dec - 25 Jan	easyJet
04 Dec - 07 Dec	easyJet
31 Dec - 04 Jan	easyJet
22 Dec - 27 Dec	Aer Lingus
14 Dec - 23 Dec	Aer Lingus
21 Dec - 31 Dec	easyJet
28 Dec - 01 Jan	easyJet
23 Dec - 27 Dec	easyJet
26 Dec - 02 Jan	easyJet
23 Dec - 30 Dec	easyJet
23 Dec - 29 Dec	easyJet

Also check the deals for one-way flights from Belfast to Kaunas in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Belfast to Kaunas in December from $154

Return flights